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Finding the Fourth Proportional to 629,721.60, 944,812.80 and 255,782.40

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Solution

The fourth proportional to 629,721.60, 944,812.80 and 255,782.40 is: 383,767.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,721.60 : 944,812.80 = 255,782.40 : x
  2. Step 2: Convert to fraction form
    629,721.60/944,812.80 = 255,782.40/x
  3. Step 3: Cross multiply
    629,721.60x = 944,812.80 × 255,782.40
  4. Step 4: Simplify right side
    629,721.60x = 241,666,485,534.72
  5. Step 5: Solve for x
    x = 241,666,485,534.72/629,721.60
  6. Step 6: Final answer
    x = 383,767.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.